includes/html/collectd/functions.php
<?php
/*
* Copyright (C) 2009 Bruno Prémont <bonbons AT linux-vserver.org>
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; only version 2 of the License is applicable.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
require 'includes/html/collectd/CollectdColor.php';
use LibreNMS\CollectdColor;
use LibreNMS\Config;
define('REGEXP_HOST', '/^[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/');
define('REGEXP_PLUGIN', '/^[a-zA-Z0-9_.-]+$/');
/*
* Read input variable from GET, POST or COOKIE taking
* care of magic quotes
*
* @param string $name Name of value to return
* @param array $array User-input array ($_GET, $_POST or $_COOKIE)
* @param string $default Default value
* @return string $default if name in unknown in $array, otherwise
* input value with magic quotes stripped off
*/
function read_var($name, &$array, $default = null)
{
if (isset($array[$name])) {
if (is_array($array[$name])) {
return $array[$name];
} else {
return $array[$name];
}
} else {
return $default;
}
}//end read_var()
/*
* Alphabetically compare host names, comparing label
* from tld to node name
*/
function collectd_compare_host($a, $b)
{
$ea = explode('.', $a);
$eb = explode('.', $b);
$i = (count($ea) - 1);
$j = (count($eb) - 1);
while ($i >= 0 && $j >= 0) {
if (($r = strcmp($ea[$i--], $eb[$j--])) != 0) {
return $r;
}
}
return 0;
}//end collectd_compare_host()
/**
* Fetch list of hosts found in collectd's datadirs.
*
* @return array Sorted list of hosts (sorted by label from rigth to left)
*/
function collectd_list_hosts()
{
$hosts = [];
foreach (Config::get('datadirs') as $datadir) {
if ($d = @opendir($datadir)) {
while (($dent = readdir($d)) !== false) {
if ($dent != '.' && $dent != '..' && is_dir($datadir . '/' . $dent) && preg_match(REGEXP_HOST, $dent)) {
$hosts[] = $dent;
}
}
closedir($d);
} else {
error_log('Failed to open datadir: ' . $datadir);
}
}
$hosts = array_unique($hosts);
usort($hosts, 'collectd_compare_host');
return $hosts;
}
/**
* Fetch list of plugins found in collectd's datadirs for given host.
*
* @param string $arg_host Name of host for which to return plugins
* @return array Sorted list of plugins (sorted alphabetically)
*/
function collectd_list_plugins($arg_host)
{
$plugins = [];
foreach (Config::get('datadirs') as $datadir) {
if (preg_match(REGEXP_HOST, $arg_host) && ($d = @opendir($datadir . '/' . $arg_host))) {
while (($dent = readdir($d)) !== false) {
if ($dent != '.' && $dent != '..' && is_dir($datadir . '/' . $arg_host . '/' . $dent)) {
if ($i = strpos($dent, '-')) {
$plugins[] = substr($dent, 0, $i);
} else {
$plugins[] = $dent;
}
}
}
closedir($d);
}
}
$plugins = array_unique($plugins);
sort($plugins);
return $plugins;
}//end collectd_list_plugins()
/**
* Fetch list of plugin instances found in collectd's datadirs for given host+plugin
*
* @param string $arg_host Name of host
* @param string $arg_plugin Name of plugin
* @return array Sorted list of plugin instances (sorted alphabetically)
*/
function collectd_list_pinsts($arg_host, $arg_plugin)
{
$pinsts = [];
foreach (Config::get('datadirs') as $datadir) {
if (preg_match(REGEXP_HOST, $arg_host) && ($d = opendir($datadir . '/' . $arg_host))) {
while (($dent = readdir($d)) !== false) {
if ($dent != '.' && $dent != '..' && is_dir($datadir . '/' . $arg_host . '/' . $dent)) {
if ($i = strpos($dent, '-')) {
$plugin = substr($dent, 0, $i);
$pinst = substr($dent, $i + 1);
} else {
$plugin = $dent;
$pinst = '';
}
if ($plugin == $arg_plugin) {
$pinsts[] = $pinst;
}
}
}
closedir($d);
}
}//end foreach
$pinsts = array_unique($pinsts);
sort($pinsts);
return $pinsts;
}//end collectd_list_pinsts()
/**
* Fetch list of types found in collectd's datadirs for given host+plugin+instance
*
* @arg_host Name of host
*
* @arg_plugin Name of plugin
*
* @arg_pinst Plugin instance
*
* @return array Sorted list of types (sorted alphabetically)
*/
function collectd_list_types($arg_host, $arg_plugin, $arg_pinst)
{
$types = [];
$my_plugin = $arg_plugin . (strlen($arg_pinst) ? '-' . $arg_pinst : '');
if (! preg_match(REGEXP_PLUGIN, $my_plugin)) {
return $types;
}
foreach (Config::get('datadirs') as $datadir) {
if (preg_match(REGEXP_HOST, $arg_host) && ($d = @opendir($datadir . '/' . $arg_host . '/' . $my_plugin))) {
while (($dent = readdir($d)) !== false) {
if ($dent != '.' && $dent != '..' && is_file($datadir . '/' . $arg_host . '/' . $my_plugin . '/' . $dent) && substr($dent, strlen($dent) - 4) == '.rrd') {
$dent = substr($dent, 0, strlen($dent) - 4);
if ($i = strpos($dent, '-')) {
$types[] = substr($dent, 0, $i);
} else {
$types[] = $dent;
}
}
}
closedir($d);
}
}
$types = array_unique($types);
sort($types);
return $types;
}//end collectd_list_types()
/**
* Fetch list of type instances found in collectd's datadirs for given host+plugin+instance+type
*
* @arg_host Name of host
*
* @arg_plugin Name of plugin
*
* @arg_pinst Plugin instance
*
* @arg_type Type
*
* @return array Sorted list of type instances (sorted alphabetically)
*/
function collectd_list_tinsts($arg_host, $arg_plugin, $arg_pinst, $arg_type)
{
$tinsts = [];
$my_plugin = $arg_plugin . (strlen($arg_pinst) ? '-' . $arg_pinst : '');
if (! preg_match(REGEXP_PLUGIN, $my_plugin)) {
return $tinsts;
}
foreach (Config::get('datadirs') as $datadir) {
if (preg_match(REGEXP_HOST, $arg_host) && ($d = @opendir($datadir . '/' . $arg_host . '/' . $my_plugin))) {
while (($dent = readdir($d)) !== false) {
if ($dent != '.' && $dent != '..' && is_file($datadir . '/' . $arg_host . '/' . $my_plugin . '/' . $dent) && substr($dent, strlen($dent) - 4) == '.rrd') {
$dent = substr($dent, 0, strlen($dent) - 4);
if ($i = strpos($dent, '-')) {
$type = substr($dent, 0, $i);
$tinst = substr($dent, $i + 1);
} else {
$type = $dent;
$tinst = '';
}
if ($type == $arg_type) {
$tinsts[] = $tinst;
}
}
}
closedir($d);
}
}//end foreach
$tinsts = array_unique($tinsts);
sort($tinsts);
return $tinsts;
}//end collectd_list_tinsts()
/**
* Parse symlinks in order to get an identifier that collectd understands
* (e.g. virtualisation is collected on host for individual VMs and can be
* symlinked to the VM's hostname, support FLUSH for these by flushing
* on the host-identifier instead of VM-identifier)
*
* @param string $host Hostname
* @param string $plugin Plugin name
* @param string $type
* @param string $pinst Plugin instance
* @param string $tinst Type instance
* @return string Identifier that collectd's FLUSH command understands
*/
function collectd_identifier($host, $plugin, $type, $pinst, $tinst)
{
$rrd_realpath = null;
$orig_identifier = sprintf('%s/%s%s%s/%s%s%s', $host, $plugin, strlen($pinst) ? '-' : '', $pinst, $type, strlen($tinst) ? '-' : '', $tinst);
$identifier = null;
foreach (Config::get('datadirs') as $datadir) {
if (is_file($datadir . '/' . $orig_identifier . '.rrd')) {
$rrd_realpath = realpath($datadir . '/' . $orig_identifier . '.rrd');
break;
}
}
if ($rrd_realpath) {
$identifier = basename($rrd_realpath);
$identifier = substr($identifier, 0, strlen($identifier) - 4);
$rrd_realpath = dirname($rrd_realpath);
$identifier = basename($rrd_realpath) . '/' . $identifier;
$rrd_realpath = dirname($rrd_realpath);
$identifier = basename($rrd_realpath) . '/' . $identifier;
}
if (is_null($identifier)) {
return $orig_identifier;
} else {
return $identifier;
}
}//end collectd_identifier()
/**
* Tell collectd that it should FLUSH all data it has regarding the
* graph we are about to generate.
*
* @param string $identifier
* @return bool
*/
function collectd_flush($identifier)
{
if (! Config::get('collectd_sock')) {
return false;
}
if (is_null($identifier) || (is_array($identifier) && count($identifier) == 0) || ! (is_string($identifier) || is_array($identifier))) {
return false;
}
$u_errno = 0;
$u_errmsg = '';
if ($socket = @fsockopen(Config::get('collectd_sock'), 0, $u_errno, $u_errmsg)) {
$cmd = 'FLUSH plugin=rrdtool';
if (is_array($identifier)) {
foreach ($identifier as $val) {
$cmd .= sprintf(' identifier="%s"', $val);
}
} else {
$cmd .= sprintf(' identifier="%s"', $identifier);
}
$cmd .= "\n";
$r = fwrite($socket, $cmd, strlen($cmd));
if ($r === false || $r != strlen($cmd)) {
error_log(sprintf('graph.php: Failed to write whole command to unix-socket: %d out of %d written', $r === false ? (-1) : $r, strlen($cmd)));
}
$resp = fgets($socket);
if ($resp === false) {
error_log(sprintf('graph.php: Failed to read response from collectd for command: %s', trim($cmd)));
}
$n = (int) $resp;
while ($n-- > 0) {
fgets($socket);
}
fclose($socket);
} else {
error_log(sprintf('graph.php: Failed to open unix-socket to collectd: %d: %s', $u_errno, $u_errmsg));
}
return true;
}//end collectd_flush()
/**
* Helper function to strip quotes from RRD output
*
* @param string $str RRD-Info generated string
* @return string String with one surrounding pair of quotes stripped
*/
function rrd_strip_quotes($str)
{
if ($str[0] == '"' && $str[strlen($str) - 1] == '"') {
return substr($str, 1, strlen($str) - 2);
} else {
return $str;
}
}//end rrd_strip_quotes()
/**
* Determine useful information about RRD file
*
* @param string $file Name of RRD file to analyse
* @return array Array describing the RRD file
*/
function _rrd_info($file)
{
$info = ['filename' => $file];
$rrd = popen(RRDTOOL . ' info ' . escapeshellarg($file), 'r');
if ($rrd) {
while (($s = fgets($rrd)) !== false) {
$p = strpos($s, '=');
if ($p === false) {
continue;
}
$key = trim(substr($s, 0, $p));
$value = trim(substr($s, $p + 1));
if (strncmp($key, 'ds[', 3) == 0) {
// DS definition
$p = strpos($key, ']');
$ds = substr($key, 3, $p - 3);
if (! isset($info['DS'])) {
$info['DS'] = [];
}
$ds_key = substr($key, $p + 2);
if (strpos($ds_key, '[') === false) {
if (! isset($info['DS']["$ds"])) {
$info['DS']["$ds"] = [];
}
$info['DS']["$ds"]["$ds_key"] = rrd_strip_quotes($value);
}
} elseif (strncmp($key, 'rra[', 4) == 0) {
// RRD definition
$p = strpos($key, ']');
$rra = substr($key, 4, $p - 4);
if (! isset($info['RRA'])) {
$info['RRA'] = [];
}
$rra_key = substr($key, $p + 2);
if (strpos($rra_key, '[') === false) {
if (! isset($info['RRA']["$rra"])) {
$info['RRA']["$rra"] = [];
}
$info['RRA']["$rra"]["$rra_key"] = rrd_strip_quotes($value);
}
} elseif (strpos($key, '[') === false) {
$info[$key] = rrd_strip_quotes($value);
}//end if
}//end while
pclose($rrd);
}//end if
return $info;
}//end _rrd_info()
function rrd_get_color($code, $line = true)
{
$name = ($line ? 'f_' : 'h_') . $code;
if (! Config::has("rrd_colors.$name")) {
$c_f = new CollectdColor('random');
$c_h = new CollectdColor($c_f);
$c_h->fade();
Config::set("rrd_colors.f_$code", $c_f->toString());
Config::set("rrd_colors.h_$code", $c_h->toString());
}
return Config::get("rrd_colors.$name");
}//end rrd_get_color()
/**
* Draw RRD file based on it's structure
*
* @param $host
* @param $plugin
* @param $type
* @param null $pinst
* @param null $tinst
* @param array $opts
* @return string|false Commandline to call RRDGraph in order to generate the final graph* @internal param $
*/
function collectd_draw_rrd($host, $plugin, $type, $pinst = null, $tinst = null, $opts = [])
{
$timespan_def = null;
$timespans = Config::get('timespan');
if (! isset($opts['timespan'])) {
$timespan_def = reset($timespans);
} else {
foreach ($timespans as &$ts) {
if ($ts['name'] == $opts['timespan']) {
$timespan_def = $ts;
}
}
}
if (! isset($opts['rrd_opts'])) {
$opts['rrd_opts'] = [];
}
if (isset($opts['logarithmic']) && $opts['logarithmic']) {
array_unshift($opts['rrd_opts'], '-o');
}
$rrdinfo = null;
$rrdfile = sprintf('%s/%s%s%s/%s%s%s', $host, $plugin, is_null($pinst) ? '' : '-', $pinst, $type, is_null($tinst) ? '' : '-', $tinst);
foreach (Config::get('datadirs') as $datadir) {
if (is_file($datadir . '/' . $rrdfile . '.rrd')) {
$rrdinfo = _rrd_info($datadir . '/' . $rrdfile . '.rrd');
if (isset($rrdinfo['RRA']) && is_array($rrdinfo['RRA'])) {
break;
} else {
$rrdinfo = null;
}
}
}
if (is_null($rrdinfo)) {
return false;
}
$graph = [];
$has_avg = false;
$has_max = false;
$has_min = false;
reset($rrdinfo['RRA']);
$l_max = 0;
foreach ($rrdinfo['RRA'] as $k => $v) {
if ($v['cf'] == 'MAX') {
$has_max = true;
} elseif ($v['cf'] == 'AVERAGE') {
$has_avg = true;
} elseif ($v['cf'] == 'MIN') {
$has_min = true;
}
}
// Build legend. This may not work for all RRDs, i don't know :)
if ($has_avg) {
$graph[] = 'COMMENT: Last';
}
if ($has_min) {
$graph[] = 'COMMENT: Min';
}
if ($has_max) {
$graph[] = 'COMMENT: Max';
}
if ($has_avg) {
$graph[] = 'COMMENT: Avg\\n';
}
reset($rrdinfo['DS']);
foreach ($rrdinfo['DS'] as $k => $v) {
if (strlen($k) > $l_max) {
$l_max = strlen($k);
}
if ($has_min) {
$graph[] = sprintf('DEF:%s_min=%s:%s:MIN', $k, $rrdinfo['filename'], $k);
}
if ($has_avg) {
$graph[] = sprintf('DEF:%s_avg=%s:%s:AVERAGE', $k, $rrdinfo['filename'], $k);
}
if ($has_max) {
$graph[] = sprintf('DEF:%s_max=%s:%s:MAX', $k, $rrdinfo['filename'], $k);
}
}
if ($has_min && $has_max || $has_min && $has_avg || $has_avg && $has_max) {
$n = 1;
reset($rrdinfo['DS']);
foreach ($rrdinfo['DS'] as $k => $v) {
$graph[] = sprintf('LINE:%s_%s', $k, $has_min ? 'min' : 'avg');
$graph[] = sprintf('CDEF:%s_var=%s_%s,%s_%s,-', $k, $k, $has_max ? 'max' : 'avg', $k, $has_min ? 'min' : 'avg');
$graph[] = sprintf('AREA:%s_var#%s::STACK', $k, rrd_get_color($n++, false));
}
}
reset($rrdinfo['DS']);
$n = 1;
foreach ($rrdinfo['DS'] as $k => $v) {
$graph[] = sprintf('LINE1:%s_avg#%s:%s ', $k, rrd_get_color($n++, true), $k . substr(' ', 0, $l_max - strlen($k)));
if (isset($opts['tinylegend']) && $opts['tinylegend']) {
continue;
}
if ($has_avg) {
$graph[] = sprintf('GPRINT:%s_avg:AVERAGE:%%5.1lf%%s', $k, $has_max || $has_min || $has_avg ? ',' : '\\l');
}
if ($has_min) {
$graph[] = sprintf('GPRINT:%s_min:MIN:%%5.1lf%%s', $k, $has_max || $has_avg ? ',' : '\\l');
}
if ($has_max) {
$graph[] = sprintf('GPRINT:%s_max:MAX:%%5.1lf%%s', $k, $has_avg ? ',' : '\\l');
}
if ($has_avg) {
$graph[] = sprintf('GPRINT:%s_avg:LAST:%%5.1lf%%s\\l', $k);
}
}//end while
// $rrd_cmd = array(RRDTOOL, 'graph', '-', '-E', '-a', 'PNG', '-w', Config::get('rrd_width'), '-h', Config::get('rrd_height'), '-t', $rrdfile);
$rrd_cmd = [
RRDTOOL,
'graph',
'-',
'-E',
'-a',
'PNG',
'-w',
Config::get('rrd_width'),
'-h',
Config::get('rrd_height'),
];
if (Config::get('rrd_width') <= '300') {
$small_opts = [
'--font',
'LEGEND:7:mono',
'--font',
'AXIS:6:mono',
'--font-render-mode',
'normal',
];
$rrd_cmd = array_merge($rrd_cmd, $small_opts);
}
$rrd_cmd = array_merge($rrd_cmd, Config::get('rrd_opts_array'), $opts['rrd_opts'], $graph);
$cmd = RRDTOOL;
$count_rrd_cmd = count($rrd_cmd);
for ($i = 1; $i < $count_rrd_cmd; $i++) {
$cmd .= ' ' . escapeshellarg($rrd_cmd[$i]);
}
return $cmd;
}//end collectd_draw_rrd()
/**
* Draw RRD file based on it's structure
*
* @param $timespan
* @param $host
* @param $plugin
* @param $type
* @param null $pinst
* @param null $tinst
* @return false|string Commandline to call RRDGraph in order to generate the final graph* @internal param $
*/
function collectd_draw_generic($timespan, $host, $plugin, $type, $pinst = null, $tinst = null)
{
global $GraphDefs;
$timespan_def = null;
$timespans = Config::get('timespan');
foreach ($timespans as &$ts) {
if ($ts['name'] == $timespan) {
$timespan_def = $ts;
}
}
if (is_null($timespan_def)) {
$timespan_def = reset($timespans);
}
if (! isset($GraphDefs[$type])) {
return false;
}
$rrd_file = sprintf('%s/%s%s%s/%s%s%s', $host, $plugin, is_null($pinst) ? '' : '-', $pinst, $type, is_null($tinst) ? '' : '-', $tinst);
// $rrd_cmd = array(RRDTOOL, 'graph', '-', '-E', '-a', 'PNG', '-w', Config::get('rrd_width'), '-h', Config::get('rrd_height'), '-t', $rrd_file);
$rrd_cmd = [
RRDTOOL,
'graph',
'-',
'-E',
'-a',
'PNG',
'-w',
Config::get('rrd_width'),
'-h',
Config::get('rrd_height'),
];
if (Config::get('rrd_width') <= '300') {
$small_opts = [
'--font',
'LEGEND:7:mono',
'--font',
'AXIS:6:mono',
'--font-render-mode',
'normal',
];
$rrd_cmd = array_merge($rrd_cmd, $small_opts);
}
$rrd_cmd = array_merge($rrd_cmd, Config::get('rrd_opts_array'));
$rrd_args = $GraphDefs[$type];
foreach (Config::get('datadirs') as $datadir) {
$file = $datadir . '/' . $rrd_file . '.rrd';
if (! is_file($file)) {
continue;
}
$file = str_replace(':', '\\:', $file);
$rrd_args = str_replace('{file}', $file, $rrd_args);
$rrdgraph = array_merge($rrd_cmd, $rrd_args);
$cmd = RRDTOOL;
$count_rrdgraph = count($rrdgraph);
for ($i = 1; $i < $count_rrdgraph; $i++) {
$cmd .= ' ' . escapeshellarg($rrdgraph[$i]);
}
return $cmd;
}
return false;
}//end collectd_draw_generic()
/**
* Draw stack-graph for set of RRD files
*
* @param array $opts Graph options like colors
* @param array $sources List of array(name, file, ds)
* @return string Commandline to call RRDGraph in order to generate the final graph
*/
function collectd_draw_meta_stack(&$opts, &$sources)
{
$timespan_def = null;
$timespans = Config::get('timespan');
if (! isset($opts['timespan'])) {
$timespan_def = reset($timespans);
} else {
foreach ($timespans as &$ts) {
if ($ts['name'] == $opts['timespan']) {
$timespan_def = $ts;
}
}
}
if (! isset($opts['title'])) {
$opts['title'] = 'Unknown title';
}
if (! isset($opts['rrd_opts'])) {
$opts['rrd_opts'] = [];
}
if (! isset($opts['colors'])) {
$opts['colors'] = [];
}
if (isset($opts['logarithmic']) && $opts['logarithmic']) {
array_unshift($opts['rrd_opts'], '-o');
}
// $cmd = array(RRDTOOL, 'graph', '-', '-E', '-a', 'PNG', '-w', Config::get('rrd_width'), '-h', Config::get('rrd_height'),
// '-t', $opts['title']);
$cmd = [
RRDTOOL,
'graph',
'-',
'-E',
'-a',
'PNG',
'-w',
Config::get('rrd_width'),
'-h',
Config::get('rrd_height'),
];
if (Config::get('rrd_width') <= '300') {
$small_opts = [
'--font',
'LEGEND:7:mono',
'--font',
'AXIS:6:mono',
'--font-render-mode',
'normal',
];
$cmd = array_merge($cmd, $small_opts);
}
$cmd = array_merge($cmd, Config::get('rrd_opts_array'), $opts['rrd_opts']);
$max_inst_name = 0;
foreach ($sources as &$inst_data) {
$inst_name = $inst_data['name'];
$file = $inst_data['file'];
$ds = isset($inst_data['ds']) ? $inst_data['ds'] : 'value';
if (strlen($inst_name) > $max_inst_name) {
$max_inst_name = strlen($inst_name);
}
if (! is_file($file)) {
continue;
}
$cmd[] = 'DEF:' . $inst_name . '_min=' . $file . ':' . $ds . ':MIN';
$cmd[] = 'DEF:' . $inst_name . '_avg=' . $file . ':' . $ds . ':AVERAGE';
$cmd[] = 'DEF:' . $inst_name . '_max=' . $file . ':' . $ds . ':MAX';
$cmd[] = 'CDEF:' . $inst_name . '_nnl=' . $inst_name . '_avg,UN,0,' . $inst_name . '_avg,IF';
}
$inst_data = end($sources);
$inst_name = $inst_data['name'];
$cmd[] = 'CDEF:' . $inst_name . '_stk=' . $inst_name . '_nnl';
$inst_data1 = end($sources);
while (($inst_data0 = prev($sources)) !== false) {
$inst_name0 = $inst_data0['name'];
$inst_name1 = $inst_data1['name'];
$cmd[] = 'CDEF:' . $inst_name0 . '_stk=' . $inst_name0 . '_nnl,' . $inst_name1 . '_stk,+';
$inst_data1 = $inst_data0;
}
foreach ($sources as &$inst_data) {
$inst_name = $inst_data['name'];
// $legend = sprintf('%s', $inst_name);
$legend = $inst_name;
while (strlen($legend) < $max_inst_name) {
$legend .= ' ';
}
$number_format = isset($opts['number_format']) ? $opts['number_format'] : '%6.1lf';
if (isset($opts['colors'][$inst_name])) {
$line_color = new CollectdColor($opts['colors'][$inst_name]);
} else {
$line_color = new CollectdColor('random');
}
$area_color = new CollectdColor($line_color);
$area_color->fade();
$cmd[] = 'AREA:' . $inst_name . '_stk#' . $area_color->toString();
$cmd[] = 'LINE1:' . $inst_name . '_stk#' . $line_color->toString() . ':' . $legend;
if (! (isset($opts['tinylegend']) && $opts['tinylegend'])) {
$cmd[] = 'GPRINT:' . $inst_name . '_avg:LAST:' . $number_format . '';
$cmd[] = 'GPRINT:' . $inst_name . '_avg:AVERAGE:' . $number_format . '';
$cmd[] = 'GPRINT:' . $inst_name . '_min:MIN:' . $number_format . '';
$cmd[] = 'GPRINT:' . $inst_name . '_max:MAX:' . $number_format . '\\l';
}
}//end foreach
$rrdcmd = RRDTOOL;
$count_cmd = count($cmd);
for ($i = 1; $i < $count_cmd; $i++) {
$rrdcmd .= ' ' . escapeshellarg($cmd[$i]);
}
return $rrdcmd;
}//end collectd_draw_meta_stack()
/**
* Draw stack-graph for set of RRD files
*
* @param array $opts Graph options like colors
* @param array $sources List of array(name, file, ds)
* @return string Commandline to call RRDGraph in order to generate the final graph
*/
function collectd_draw_meta_line(&$opts, &$sources)
{
$timespan_def = null;
$timespans = Config::get('timespan');
if (! isset($opts['timespan'])) {
$timespan_def = reset($timespans);
} else {
foreach ($timespans as &$ts) {
if ($ts['name'] == $opts['timespan']) {
$timespan_def = $ts;
}
}
}
if (! isset($opts['title'])) {
$opts['title'] = 'Unknown title';
}
if (! isset($opts['rrd_opts'])) {
$opts['rrd_opts'] = [];
}
if (! isset($opts['colors'])) {
$opts['colors'] = [];
}
if (isset($opts['logarithmic']) && $opts['logarithmic']) {
array_unshift($opts['rrd_opts'], '-o');
}
// $cmd = array(RRDTOOL, 'graph', '-', '-E', '-a', 'PNG', '-w', Config::get('rrd_width'), '-h', Config::get('rrd_height'), '-t', $opts['title']);
// $cmd = array_merge($cmd, Config::get('rrd_opts_array'), $opts['rrd_opts']);
$cmd = [
RRDTOOL,
'graph',
'-',
'-E',
'-a',
'PNG',
'-w',
Config::get('rrd_width'),
'-h',
Config::get('rrd_height'),
];
if (Config::get('rrd_width') <= '300') {
$small_opts = [
'--font',
'LEGEND:7:mono',
'--font',
'AXIS:6:mono',
'--font-render-mode',
'normal',
];
$cmd = array_merge($cmd, $small_opts);
}
$max_inst_name = 0;
foreach ($sources as &$inst_data) {
$inst_name = $inst_data['name'];
$file = $inst_data['file'];
$ds = isset($inst_data['ds']) ? $inst_data['ds'] : 'value';
if (strlen($inst_name) > $max_inst_name) {
$max_inst_name = strlen($inst_name);
}
if (! is_file($file)) {
continue;
}
$cmd[] = 'DEF:' . $inst_name . '_min=' . $file . ':' . $ds . ':MIN';
$cmd[] = 'DEF:' . $inst_name . '_avg=' . $file . ':' . $ds . ':AVERAGE';
$cmd[] = 'DEF:' . $inst_name . '_max=' . $file . ':' . $ds . ':MAX';
}
foreach ($sources as &$inst_data) {
$inst_name = $inst_data['name'];
$legend = sprintf('%s', $inst_name);
while (strlen($legend) < $max_inst_name) {
$legend .= ' ';
}
$number_format = isset($opts['number_format']) ? $opts['number_format'] : '%6.1lf';
if (isset($opts['colors'][$inst_name])) {
$line_color = new CollectdColor($opts['colors'][$inst_name]);
} else {
$line_color = new CollectdColor('random');
}
$cmd[] = 'LINE1:' . $inst_name . '_avg#' . $line_color->toString() . ':' . $legend;
if (! (isset($opts['tinylegend']) && $opts['tinylegend'])) {
$cmd[] = 'GPRINT:' . $inst_name . '_min:MIN:' . $number_format . '';
$cmd[] = 'GPRINT:' . $inst_name . '_avg:AVERAGE:' . $number_format . '';
$cmd[] = 'GPRINT:' . $inst_name . '_max:MAX:' . $number_format . '';
$cmd[] = 'GPRINT:' . $inst_name . '_avg:LAST:' . $number_format . '\\l';
}
}//end foreach
$rrdcmd = RRDTOOL;
$count_cmd = count($cmd);
for ($i = 1; $i < $count_cmd; $i++) {
$rrdcmd .= ' ' . escapeshellarg($cmd[$i]);
}
return $rrdcmd;
}//end collectd_draw_meta_line()